Desk lamp



FIG. 1 is a front elevational view of a desk lamp according to the present design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a left side view thereof showing a state in which two shaft members of the upper arm part closely contact each other;

FIG. 8 is a left side view thereof showing a state in which two shaft members of the lower arm part closely contact each other;

FIG. 9 is a left side view thereof showing a state in which two shaft members of the both upper and lower arm parts closely contact eash other respectively; and,

FIG. 10 is a left side view thereof showing a state in which the head rotates left. 

The ornamental design for a desk lamp, as shown and described. 